# Copyright (c) Alibaba, Inc. and its affiliates.
from typing import TYPE_CHECKING

from swift.utils.import_utils import _LazyModule

if TYPE_CHECKING:
    from .cpo_trainer import CPOTrainer
    from .dpo_trainer import DPOTrainer
    from .grpo_trainer import GRPOTrainer
    from .kto_trainer import KTOTrainer
    from .orpo_trainer import ORPOTrainer
    from .ppo_trainer import PPOTrainer
    from .reward_trainer import RewardTrainer
    from .gkd_trainer import GKDTrainer
    from .rlhf_mixin import RLHFTrainerMixin
    from .utils import (
        patch_lora_merge,
        patch_lora_unmerge,
        round_robin,
        _ForwardRedirection,
    )
else:
    _import_structure = {
        "cpo_trainer": ["CPOTrainer"],
        "dpo_trainer": ["DPOTrainer"],
        "grpo_trainer": ["GRPOTrainer"],
        "kto_trainer": ["KTOTrainer"],
        "orpo_trainer": ["ORPOTrainer"],
        "ppo_trainer": ["PPOTrainer"],
        "reward_trainer": ["RewardTrainer"],
        "gkd_trainer": ["GKDTrainer"],
        "rlhf_mixin": ["RLHFTrainerMixin"],
        "utils": [
            "patch_lora_merge",
            "patch_lora_unmerge",
            "round_robin",
            "_ForwardRedirection",
        ],
    }

    import sys

    sys.modules[__name__] = _LazyModule(
        __name__,
        globals()["__file__"],
        _import_structure,
        module_spec=__spec__,
        extra_objects={},
    )
